Watching the monsters turn into a carpet of red and yellow minced meat under that sustained barrage, he felt a deep sense of satisfaction. This round of upgrades wasn't just a marginal improvement; it was a giant leap to a whole new level.
By the time five hours had passed, John had stopped hovering over the first test unit. He had seen enough to trust the new gear. The new generator and energy cell were enough to keep up with the crazy output and energy requirement of the super cannon.
During those hours, he worked like a man possessed, converting every salvaged energy cell and generator into its Advanced state.
Once the power grid was prepared, he moved along the perimeter of the walls, upgrading the battery of cannons one by one, leaving the advanced generators and energy cells down behind the walls at regular intervals.
"I can't believe we even thought of fighting him!!"
